December 5, 2025Chemistry - An Asian Journal0 citations

Hierarchical Pore Engineering in Al 2 O 3 /UiO‐66 Nanoarchitectures Synergistic Enhancement for Superior Phosphate Capture From Water

Key Points

Maximum theoretical adsorption capacity reached 303 mg/g based on the Langmuir model, indicating effective phosphate removal.
Retention of over 85% adsorption efficiency after six cycles highlights the stability of the composite under repeated use.
Rapid adsorption equilibrium was reached within 90 minutes, demonstrating the efficiency of the material in practical applications.
The composite's selectivity for phosphate over common ions showcases its potential in wastewater treatment systems.

Abstract

ABSTRACT In this study, a hierarchical porous (HP) Al 2 O 3 /HP‐UiO‐66 composite was prepared via a facile template and solvothermal strategy. The material exhibits a high adsorption capacity for phosphate, with a maximum theoretical value of 303 mg/g based on the Langmuir model—eight times greater than that of the original UiO‐66. It also displays excellent selectivity for phosphate over common ions in domestic wastewater, along with a wide pH stability range (2–10) and rapid adsorption equilibrium, reaching saturation within 90 min. Moreover, the composite maintains over 85% of its adsorption efficiency after six cycles. These results demonstrate that Al 2 O 3 /HP‐UiO‐66 possesses enhanced adsorption capacity, faster kinetics, improved acid–base resistance, and superior selectivity, highlighting its potential for effective phosphate removal from wastewater.

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